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We have a project where the owner just wants to manually turn a switch to transfer from main power to backup power for a fire pump instead of having an Automatic Transfer Switch.
Wouldn't this be considered manual activation under NFPA 20, and not be allowed? I would think this arrangement isn't allowed because that's not automatic transfer. Thanks in advance for your input. Sent in anonymously for discussion. Click Title to View | Submit Your Question | Subscribe
6 Comments
Pete H
6/5/2024 06:55:01 am
I think that would be considered manual activation.
Pete H
6/5/2024 06:55:58 am
No listed manual transfer switch, not automatic.
Dan Wilder
6/5/2024 07:03:52 am
Interestingly, NFPA 20 has a definition for a Manual Transfer Switch (20-22' Ed)
Glenn Berger
6/5/2024 09:01:33 am
This question is similar to one that I asked several months ago. The power to the fire pumps needs to be available at all times without manual intervention.
Ricardo Sellek
6/5/2024 10:17:46 am
Section 10.8.1.2 is very clear that manual transfer to secondary power is not allowed. This has to be an automatic transfer switch.
Ricardo Gonzales Jr
6/7/2024 09:20:53 am
I agree with the above and the NEC even has provisions that the power is taken ahead of the main switchgear for the building (if electric). As with other non-life safety systems operated manually, they seem to have all failed operations when needed, so why trust an important system? Call me a downer, but I've seen a lot of security systems fail due to lack of training, people turn-over, and minimum paid people put in charge in as short as 6 months. Leave a Reply. |
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